LaPO₄:Eu³⁺ in situ formed in polymeric gels and its photophysical properties

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• 作者：Yan li ; Yuhui Zheng ; ^{yhzheng78@scnu.edu.cn} ; ^{qmwang@scnu.edu.cn} ; Qianming Wang ; Weisheng Cai ; Yifei Yu
• 关键词：LaPO4 ; Europium ; Hydrogel ; Phosphor
• 刊名：Optical Materials
• 出版年：2012
• 出版时间：May, 2012
• 年：2012
• 卷：34
• 期：7
• 页码：1019-1022
• 全文大小：367 K

文摘

Europium activated lanthanum phosphate were in situ formed within polymeric hydrogels as templates (polyacrylamide and polyacrylic acid) and the resulting sintered phosphors were obtained. Luminescence properties of cross-linked gels with LaPO₄:Eu³⁺ were investigated by fluorescence and the results show the emission increased from 25 ¡ãC to 85 ¡ãC. Calcinated sample could exhibit distinguished ⁵D₀ ?#xA0;⁷F₁ transition with orange-red color, which indicated Eu³⁺ ions occupy in the crystal lattice with inversion symmetry. More importantly, the products fabricated by hydrogel assembly show higher emission intensities compared with convention method.